Multiple Choice
What is the role of pacemaker cells?
A) They rapidly develop action potentials.
B) They are shallow invaginations of the plasma membrane.
C) They maintain relatively constant tension for a period of time.
D) They are part of the intracellular cytoskeleton.
E) They are enzymes that remove phosphate from myosin.
Correct Answer:

Verified
Correct Answer:
Verified
Q17: Which of the following is NOT true
Q18: A lack of glycolytic enzymes within skeletal
Q19: Identify the statement concerning general functional characteristics
Q20: Skeletal muscle fibers<br>A) possess striations.<br>B) can contract
Q21: What is the power stroke?<br>A) A protein
Q23: Acetylcholine binds to a membrane bound receptor
Q24: Due to the pattern of innervation of
Q25: Troponin<br>A) has two subunits.<br>B) is part of
Q26: The capacity of a muscle cell to
Q27: Too much acetylcholinesterase causes<br>A) continuous stimulation of